MacOs When net.inet.ip.forwarding=1 will loop (re)sent tcp syn

[bboy910225]

I am using Wireguard + udpspeeder + udp2raw.
It's work success.

But when I enable sysctl -w net.inet.ip.forwarding=1.
Udp2raw will loop (re)sent tcp syn( it seems come from wireguard). I am try to edit pfctl rule.
But it's still failed.

Because I set net.inet.ip.forwarding=0 connect normal.
I want to share my Mac OS to other wireguard's tunnel that I need to switch net.inet.ip.forwarding=1.
Any one suggest how to solve it problem or any other methods to connect wireguard tunnel each other.
Thanks for your help!

[bboy910225]

Already fix it. Thanks